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a. The space above the mercury column in a thermometer ordinarily is evacuated, but due to faulty manufacture, a particular thermometer has a pressure of 2 mmHg of air in this space when the hole thermometer is immersed in a bath at 0 0C. Calculate the pressure of the air when the whole thermometer is immersed in a bath at 100 0C. As the figure below shows, at 0 0C, the length of air space is 10 cm; and at 100 0C, it is 2 cm. b. A person blows air (creating bubbles) through a straw that is inserted into water such that the bottom of the straw is 1.00 m below the surface. What is the pressure in the person's mouth if the atmospheric pressure is 1.00 bar? Give your answer in pascals.
Assuming that the gas becomes saturated with benzene vapor and that the total gas volume and temperature remain constant, what is the vapor pressure of the benzene in torr
Running a TLC of Unknown Compound X using eluent hexane:ethyl acetate 4:1. The Rf of the unknown is too close to the baseline. What should I do?
Using the thermodynamic data below, and a value of -717 kJ/mol for the Ulattice enthalpy for KCl, calculate the ionization energy of K. Hint: Remember to plug in numbers to the equation given in course content.
What is the molar mass of 35 g of an unknown substance that depresses the freezing point of .350 kg of water .50°C? Kf for water is 1.86C/m.
One of the advantages offered by a synthetic detergent is that it won't form "soap scum" with hard water. Show the chemical reaction that a soap (use RCO2-) undergoes with calcium or magnesium ions
The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate, how many seconds would it take to swim 0.800 miles.
What volume of H2O(g) is produced when 7.90 mo of C2H4 (g) reacts at STP? C2H4 (g) + 3O2 (g) ----> 2 CO2 (g) + 2 H20 (g)
Gas A has a density of 0.20 g L, and gas B has a density of 0.80gL, both at the same specific temperature and prassure. Which gas diffuse faster
What are the major components of the mixture after acid-base equilibriums have been established if a) half a mol, b) 2 mol of sulfuric acid (H2SO4) are added to a solution of one mol ketone
a reaction has an activation energy of 195 kjmol. when the temperature is increased from 200 c to 220 c the rate
At 700 K the equilibrium constant for the reaction is Kp = 0.76. CCl4(g)-> C(s) + 2 Cl2(g) A flask is charged with 2.00 atm of CCl4, which then reaches equilibrium at 700 K. (a) What fraction of the CCl4 is converted into C and Cl2?
Halogenated compounds are particularly easy to identify by their mass spectra because chlorine and bromine occur naturally as mixtures of two abundant isotopes
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